Bubble gum bank



FIG. 1 is a top, front and right-side perspective view of a bubble gum bank showing our new design;

FIG. 2 is front elevational view thereof;

FIG. 3 is top plan view thereof;

FIG. 4 is side elevational view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a bubble gum bank, as shown and described. 